HyOptic FWDM blocking filter for OTDR 1650nm is pacakged in pluggable SC male to female adapter body. It can effectively prevent the interference of the 1650 wavelength signal to the ONU, and reflect the 1650 signal back to the OTDR device.

Pass band: 1260-1625nm
Reflect band: 1645-1655nm
Insertion loss < 1.5dB for GPON signal
Isolatoin of passing for 1650 > 20 dB